Stamping die limiting mechanism capable of improving stamping precision

Abstract

The utility model discloses a stamping die limiting mechanism capable of improving stamping precision, which relates to the related technical field of stamping dies and comprises a base, a lower die holder is arranged at the top end of the base, four limiting rods are arranged at the top of the lower die holder, and a punched hole is formed in the top end of the lower die holder; the four movable sleeves are arranged at the top of the base; the two supporting seats are arranged at the top of the base; the telescopic air cylinder is arranged on the top of the supporting base, and a limiting block is arranged at the output end of the telescopic air cylinder. A connecting rod is arranged at the top end of the fixing plate, and four through holes are formed in the top of the fixing plate; the upper die base is arranged in the middle of the bottom end of the fixing plate, a limiting groove is formed in the bottom of the upper die base, and a punch is arranged at the bottom end of the upper die base. The upper end of the compression spring is arranged at the bottom of the fixed plate, and a movable block is arranged at the lower end of the compression spring; and the sleeve rod is arranged at the top of the movable block. According to the scheme, the punching precision is improved, and damage caused by punching rigid contact is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field related to stamping dies, and in particular to a stamping die limiting mechanism capable of improving stamping precision. Background Art

[0002] Stamping dies are commonly used tools in the manufacture of metal parts. They are usually used to apply pressure on metal plates to form workpieces of specific shapes. Stamping dies are commonly used in industrial manufacturing, especially in the fields of metal processing and plastic processing. They play a key role in manufacturing and are used to produce a variety of parts and products. The limit mechanism of the stamping die refers to a device used to control the range of movement of the die during operation. These mechanisms are usually used to ensure that the die stops at the correct position so that stamping or other processing operations can be performed accurately. Common limit mechanisms include limit pins, limit blocks, etc.

[0003] In the existing stamping die limiting mechanism, when the upper die seat moves downward, it contacts the lower die seat, and the two are in rigid contact. Due to the large output pressure of the stamping, the force between the upper die seat and the lower die seat is large, so that both the upper die and the lower die are easily damaged, resulting in low stamping accuracy and the workpiece is also easily damaged during the stamping process. Therefore, it is urgent to design a stamping die limiting mechanism that can improve the stamping accuracy to solve the above problems. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, a stamping die limiting mechanism that can improve the stamping accuracy is provided. This technical solution solves the problem proposed in the above-mentioned background technology that when the upper die seat contacts the lower die seat when it descends, the two are in rigid contact. Due to the large output pressure of the stamping, the force between the upper die seat and the lower die seat is large, so that both the upper die and the lower die are easily damaged, resulting in low stamping accuracy and the workpiece is also easily damaged during the stamping process.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A stamping die limiting mechanism capable of improving stamping precision comprises:

[0007] A base, the base is placed horizontally and is arranged in a square shape;

[0008] A lower die seat is fixedly mounted at the middle of the top of the base, four limit rods are evenly and equidistantly mounted at the four corners of the top of the lower die seat, a punching hole is opened at the middle of the top of the lower die seat, and the punching hole runs through the lower die seat and the base;

[0009] There are four movable sleeves, and the four movable sleeves are evenly and equidistantly installed at the four corners of the top of the base;

[0010] Support seats, the number of the support seats is two, the two support seats are symmetrically installed on the top of the base, and are arranged on the left and right sides of the lower mold base;

[0011] Telescopic cylinders, the number of which is two, the two telescopic cylinders are fixedly mounted on the tops of the two support seats respectively, and a limit block is fixedly mounted on the output end of the telescopic cylinder;

[0012] A fixed plate is arranged above the lower die seat, a connecting rod is fixedly installed at the middle of the top end of the fixed plate, and four through holes are evenly and equidistantly opened on the top of the fixed plate;

[0013] An upper die seat, the upper die seat is fixedly mounted at the middle of the bottom end of the fixed plate, four limiting grooves are evenly and equidistantly formed at the four corners of the bottom of the upper die seat, and a punch is fixedly mounted at the middle of the bottom end of the upper die seat;

[0014] Compression springs, the number of the compression springs is four, the upper ends of the four compression springs are respectively fixedly mounted on the four corners of the bottom of the fixed plate, and the lower ends of the four compression springs are fixedly mounted with movable blocks;

[0015] The sleeve rods are four in number, the four sleeve rods are respectively mounted on the tops of the four movable blocks, and the four sleeve rods are respectively arranged inside the four compression springs.

[0016] Furthermore, the size of the limiting rod is matched with that of the limiting slot.

[0017] Furthermore, the sizes of the compression spring and the movable block are adapted to the inner wall size of the movable sleeve.

[0018] Furthermore, the two limit blocks are both in contact with the top of the lower die base, and the two limit blocks are symmetrically arranged on the left and right sides of the punching hole.

[0019] Furthermore, the sizes of the four through holes are matched with the sizes of the four sleeve rods, and the upper ends of the four sleeve rods are respectively arranged inside the four through holes.

[0020] Furthermore, the size of the punch is adapted to the size of the punch hole.

[0021] As a preferred technical solution of the utility model, compared with the prior art, the utility model provides a stamping die limiting mechanism that can improve stamping accuracy, and has the following beneficial effects:

[0022] In the utility model, the movable block moves in the movable sleeve to realize the guide limit of the combination of the base and the fixed plate, thereby improving the accuracy of the docking between the base and the fixed plate; when the upper die seat moves downward, the limit rod extends into the limit groove, thereby limiting the moving path of the upper die seat, so that the upper die seat can move downward in a directional and stable manner, thereby making the combination of the punch and the punching more accurate, and making the stamping operation more accurate; the movement of the two limit blocks is controlled by two telescopic cylinders, so that the two limit blocks fix the workpiece to be stamped on the top of the punching hole, improve the stability of the workpiece to be processed, and thereby improve the stamping accuracy; when the upper die seat moves downward for stamping, the movable block enters the movable sleeve, thereby squeezing the compression spring, and then the sleeve rod at the top of the movable block moves upward through the through hole to form a limit buffer structure, which reduces the force generated by the stamping of the upper die seat and the lower die seat, thereby reducing the damage to the upper die seat and the lower die seat, and reducing the damage caused to the workpiece during the stamping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the overall structure of the utility model from another perspective;

[0025] Figure 3 It is a structural schematic diagram of the limit assembly in the utility model.

[0026] The numbers in the figure are:

[0027] 1. Base; 2. Lower die seat; 3. Limit rod; 4. Punch; 5. Movable sleeve; 6. Support seat; 7. Telescopic cylinder; 8. Limit block; 9. Fixed plate; 10. Connecting rod; 11. Upper die seat; 12. Limit groove; 13. Movable block; 14. Compression spring; 15. Sleeve rod; 16. Through hole. DETAILED DESCRIPTION

[0028] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0029] Reference Figure 1-3As shown, a stamping die limiting mechanism capable of improving stamping accuracy comprises a base 1: the base 1 is placed horizontally and is arranged in a square shape; a lower die seat 2 is fixedly installed in the middle of the top of the base 1, four limiting rods 3 are evenly and equidistantly installed at the four corners of the top of the lower die seat 2, a punching hole 4 is opened in the middle of the top of the lower die seat 2, the punching hole 4 runs through the lower die seat 2 and the base 1, and the waste generated by stamping passes through the lower die seat 2 and the base 1 through the punching hole 4, and then is discharged from the processing area; there are four movable sleeves 5, and the four movable sleeves 5 are evenly and equidistantly installed at the four corners of the top of the base 1; a support seat There are two 6, and the two support seats 6 are symmetrically installed on the top of the base 1 and are arranged on the left and right sides of the lower die seat 2; there are two telescopic cylinders 7, and the two telescopic cylinders 7 are respectively fixedly installed on the top of the two support seats 6. The output end of the telescopic cylinder 7 is fixedly installed with a limit block 8, and the two limit blocks 8 are both abutted against the top of the lower die seat 2, and the two limit blocks 8 are symmetrically arranged on the left and right sides of the punching hole 4. The movement of the two limit blocks 8 is controlled by the two telescopic cylinders 7, and then the plate to be processed is fixed on the top of the punching hole 4 by the two limit blocks 8.

[0030] In another embodiment provided by the present utility model, Figure 1 As shown, the fixed plate 9 is arranged above the lower die base 2, a connecting rod 10 is fixedly installed in the middle of the top end of the fixed plate 9, and four through holes 16 are evenly and equidistantly opened on the top of the fixed plate 9; the upper die base 11 is fixedly installed in the middle of the bottom end of the fixed plate 9, and four limit grooves 12 are evenly and equidistantly opened at the four corners of the bottom of the upper die base 11, and a punch is fixedly installed in the middle of the bottom end of the upper die base 11; the number of compression springs 14 is four, and the upper ends of the four compression springs 14 are respectively fixedly installed at the four corners of the bottom of the fixed plate 9, and the lower ends of the four compression springs 14 are all fixedly installed with movable blocks 13, and the sizes of the compression springs 14 and the movable blocks 13 are adapted to the inner wall size of the movable sleeve 5. In the process of the fixed plate 9 moving downward, the movable block 13 and the compression spring 14 enter the interior of the movable sleeve 5 to provide a stable guide for the movement of the fixed plate 9; the number of sleeve rods 15 is four, and the four sleeve rods 15 are respectively installed on the tops of the four movable blocks 13, and the four sleeve rods 15 are respectively arranged inside the four compression springs 14.

[0031] In another embodiment provided by the present utility model, Figure 2 As shown, the size of the limiting rod 3 is matched with the limiting groove 12. When the upper die base 11 moves downward, the limiting groove 12 is inserted into the limiting rod 3 and moves along the limiting rod 3, thereby making the upper die base 11 and the lower die base 2 more accurately stamped.

[0032] In another embodiment provided by the present utility model, Figure 1As shown, the size of the four through holes 16 is matched with the size of the four sleeve rods 15, and the upper ends of the four sleeve rods 15 are respectively arranged inside the four through holes 16. When the upper die base 11 moves downward for stamping, the movable block 13 enters the movable sleeve 5, thereby squeezing the compression spring 14, and then the sleeve rod 15 on the top of the movable block 13 passes through the through hole 16 and moves upward to form a limit buffer structure, which limits the moving path of the fixed plate 9, thereby making the fixed plate 9 and the base 1 more accurately combined, and reducing the force generated by the stamping of the upper die base 11 and the lower die base 2.

[0033] In another embodiment provided by the present utility model, Figure 1 As shown, the size of the punch is matched to the size of the punch hole 4 , the workpiece is punched by the punch, and the generated waste is discharged through the punch hole 4 .

[0034] Working principle: In the utility model, the base 1 is fixed on the workbench, and a limit block 8 with the same thickness as or less than the thickness of the plate to be processed is selected, and the limit block 8 is fixedly connected to the larger output end of the telescopic cylinder 7, and the two limit blocks 8 are controlled by two telescopic cylinders 7 to fix and limit the workpiece to be processed, and then the connecting rod 10 is fixedly connected to the output end of the external hydraulic cylinder, and the connecting rod 10 is controlled to move downward by the hydraulic cylinder, and then the fixed plate 9 is controlled to drive the upper die seat 11 to move downward, and the limit rod 3 enters the limit groove 12, and the compression spring 14 and the movable block 13 enter the interior of the movable sleeve 5. When the movable block 13 abuts against the bottom of the inner wall of the movable sleeve 5, the compression spring 14 contracts, and then the upper end of the sleeve rod 15 passes through the through hole 16 to form a buffer.

[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A stamping die limiting mechanism capable of improving stamping accuracy, characterized in that: include: A base (1), the base (1) is placed horizontally and is arranged in a square shape; A lower die base (2) is fixedly mounted at the middle of the top of the base (1); four limit rods (3) are evenly and equidistantly mounted at the four corners of the top of the lower die base (2); a punching hole (4) is opened at the middle of the top of the lower die base (2); the punching hole (4) passes through the lower die base (2) and the base (1); A movable sleeve (5), wherein the number of the movable sleeves (5) is four, and the four movable sleeves (5) are evenly and equidistantly installed at the top four corners of the base (1); Support seats (6), the number of the support seats (6) is two, the two support seats (6) are symmetrically mounted on the top of the base (1), and are arranged on the left and right sides of the lower mold base (2); A telescopic cylinder (7), wherein the number of the telescopic cylinders (7) is two, and the two telescopic cylinders (7) are respectively fixedly mounted on the top of two support seats (6), and a limit block (8) is fixedly mounted on the output end of the telescopic cylinder (7); A fixed plate (9) is arranged above the lower die base (2), a connecting rod (10) is fixedly installed at the middle of the top end of the fixed plate (9), and four through holes (16) are evenly and equidistantly opened at the top of the fixed plate (9); An upper die seat (11), the upper die seat (11) is fixedly mounted at the middle of the bottom end of the fixed plate (9), four limiting grooves (12) are evenly and equidistantly formed at the four corners of the bottom of the upper die seat (11), and a punch is fixedly mounted at the middle of the bottom end of the upper die seat (11); Compression springs (14), the number of the compression springs (14) is four, the upper ends of the four compression springs (14) are respectively fixedly mounted on the four corners of the bottom of the fixed plate (9), and the lower ends of the four compression springs (14) are all fixedly mounted with movable blocks (13); The sleeve rods (15) are four in number, the four sleeve rods (15) are respectively mounted on the tops of the four movable blocks (13), and the four sleeve rods (15) are respectively arranged inside the four compression springs (14).

2. A stamping die limiting mechanism capable of improving stamping accuracy according to claim 1, characterized in that: The size of the limiting rod (3) is matched with that of the limiting groove (12).

3. The stamping die limiting mechanism capable of improving stamping accuracy according to claim 1, characterized in that: The sizes of the compression spring (14) and the movable block (13) are adapted to the inner wall size of the movable sleeve (5).

4. The stamping die limiting mechanism capable of improving stamping accuracy according to claim 1, characterized in that: The two limit blocks (8) are both in contact with the top of the lower die base (2), and the two limit blocks (8) are symmetrically arranged on the left and right sides of the punching hole (4).

5. The stamping die limiting mechanism capable of improving stamping accuracy according to claim 1, characterized in that: The sizes of the four through holes (16) are matched with the sizes of the four sleeve rods (15), and the upper ends of the four sleeve rods (15) are respectively arranged inside the four through holes (16).

6. The stamping die limiting mechanism capable of improving stamping accuracy according to claim 1, characterized in that: The size of the punch is adapted to the size of the punch hole (4).

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